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Diffstat (limited to 'source/smbd/nttrans.c')
| -rw-r--r-- | source/smbd/nttrans.c | 1880 |
1 files changed, 1880 insertions, 0 deletions
diff --git a/source/smbd/nttrans.c b/source/smbd/nttrans.c new file mode 100644 index 00000000000..2c3ac06f3c8 --- /dev/null +++ b/source/smbd/nttrans.c @@ -0,0 +1,1880 @@ +/* + Unix SMB/Netbios implementation. + Version 1.9. + SMB NT transaction handling + Copyright (C) Jeremy Allison 1994-1998 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "includes.h" + +extern int Protocol; +extern int smb_read_error; +extern int global_oplock_break; +extern BOOL case_sensitive; +extern BOOL case_preserve; +extern BOOL short_case_preserve; + +static char *known_nt_pipes[] = { + "\\LANMAN", + "\\srvsvc", + "\\samr", + "\\wkssvc", + "\\NETLOGON", + "\\ntlsa", + "\\ntsvcs", + "\\lsass", + "\\lsarpc", + "\\winreg", + "\\spoolss", + "\\netdfs", + NULL +}; + +/* Map generic permissions to file object specific permissions */ + +struct generic_mapping file_generic_mapping = { + FILE_GENERIC_READ, + FILE_GENERIC_WRITE, + FILE_GENERIC_EXECUTE, + FILE_GENERIC_ALL +}; + +/**************************************************************************** + Send the required number of replies back. + We assume all fields other than the data fields are + set correctly for the type of call. + HACK ! Always assumes smb_setup field is zero. +****************************************************************************/ + +static int send_nt_replies(char *inbuf, char *outbuf, int bufsize, NTSTATUS nt_error, char *params, + int paramsize, char *pdata, int datasize) +{ + extern int max_send; + int data_to_send = datasize; + int params_to_send = paramsize; + int useable_space; + char *pp = params; + char *pd = pdata; + int params_sent_thistime, data_sent_thistime, total_sent_thistime; + int alignment_offset = 3; + int data_alignment_offset = 0; + + /* + * Initially set the wcnt area to be 18 - this is true for all + * transNT replies. + */ + + set_message(outbuf,18,0,True); + + if (NT_STATUS_V(nt_error)) { + ERROR_NT(nt_error); + } + + /* + * If there genuinely are no parameters or data to send just send + * the empty packet. + */ + + if(params_to_send == 0 && data_to_send == 0) { + if (!send_smb(smbd_server_fd(),outbuf)) + exit_server("send_nt_replies: send_smb failed."); + return 0; + } + + /* + * When sending params and data ensure that both are nicely aligned. + * Only do this alignment when there is also data to send - else + * can cause NT redirector problems. + */ + + if (((params_to_send % 4) != 0) && (data_to_send != 0)) + data_alignment_offset = 4 - (params_to_send % 4); + + /* + * Space is bufsize minus Netbios over TCP header minus SMB header. + * The alignment_offset is to align the param bytes on a four byte + * boundary (2 bytes for data len, one byte pad). + * NT needs this to work correctly. + */ + + useable_space = bufsize - ((smb_buf(outbuf)+ + alignment_offset+data_alignment_offset) - + outbuf); + + /* + * useable_space can never be more than max_send minus the + * alignment offset. + */ + + useable_space = MIN(useable_space, + max_send - (alignment_offset+data_alignment_offset)); + + + while (params_to_send || data_to_send) { + + /* + * Calculate whether we will totally or partially fill this packet. + */ + + total_sent_thistime = params_to_send + data_to_send + + alignment_offset + data_alignment_offset; + + /* + * We can never send more than useable_space. + */ + + total_sent_thistime = MIN(total_sent_thistime, useable_space); + + set_message(outbuf, 18, total_sent_thistime, True); + + /* + * Set total params and data to be sent. + */ + + SIVAL(outbuf,smb_ntr_TotalParameterCount,paramsize); + SIVAL(outbuf,smb_ntr_TotalDataCount,datasize); + + /* + * Calculate how many parameters and data we can fit into + * this packet. Parameters get precedence. + */ + + params_sent_thistime = MIN(params_to_send,useable_space); + data_sent_thistime = useable_space - params_sent_thistime; + data_sent_thistime = MIN(data_sent_thistime,data_to_send); + + SIVAL(outbuf,smb_ntr_ParameterCount,params_sent_thistime); + + if(params_sent_thistime == 0) { + SIVAL(outbuf,smb_ntr_ParameterOffset,0); + SIVAL(outbuf,smb_ntr_ParameterDisplacement,0); + } else { + /* + * smb_ntr_ParameterOffset is the offset from the start of the SMB header to the + * parameter bytes, however the first 4 bytes of outbuf are + * the Netbios over TCP header. Thus use smb_base() to subtract + * them from the calculation. + */ + + SIVAL(outbuf,smb_ntr_ParameterOffset, + ((smb_buf(outbuf)+alignment_offset) - smb_base(outbuf))); + /* + * Absolute displacement of param bytes sent in this packet. + */ + + SIVAL(outbuf,smb_ntr_ParameterDisplacement,pp - params); + } + + /* + * Deal with the data portion. + */ + + SIVAL(outbuf,smb_ntr_DataCount, data_sent_thistime); + + if(data_sent_thistime == 0) { + SIVAL(outbuf,smb_ntr_DataOffset,0); + SIVAL(outbuf,smb_ntr_DataDisplacement, 0); + } else { + /* + * The offset of the data bytes is the offset of the + * parameter bytes plus the number of parameters being sent this time. + */ + + SIVAL(outbuf,smb_ntr_DataOffset,((smb_buf(outbuf)+alignment_offset) - + smb_base(outbuf)) + params_sent_thistime + data_alignment_offset); + SIVAL(outbuf,smb_ntr_DataDisplacement, pd - pdata); + } + + /* + * Copy the param bytes into the packet. + */ + + if(params_sent_thistime) + memcpy((smb_buf(outbuf)+alignment_offset),pp,params_sent_thistime); + + /* + * Copy in the data bytes + */ + + if(data_sent_thistime) + memcpy(smb_buf(outbuf)+alignment_offset+params_sent_thistime+ + data_alignment_offset,pd,data_sent_thistime); + + DEBUG(9,("nt_rep: params_sent_thistime = %d, data_sent_thistime = %d, useable_space = %d\n", + params_sent_thistime, data_sent_thistime, useable_space)); + DEBUG(9,("nt_rep: params_to_send = %d, data_to_send = %d, paramsize = %d, datasize = %d\n", + params_to_send, data_to_send, paramsize, datasize)); + + /* Send the packet */ + if (!send_smb(smbd_server_fd(),outbuf)) + exit_server("send_nt_replies: send_smb failed."); + + pp += params_sent_thistime; + pd += data_sent_thistime; + + params_to_send -= params_sent_thistime; + data_to_send -= data_sent_thistime; + + /* + * Sanity check + */ + + if(params_to_send < 0 || data_to_send < 0) { + DEBUG(0,("send_nt_replies failed sanity check pts = %d, dts = %d\n!!!", + params_to_send, data_to_send)); + return -1; + } + } + + return 0; +} + +/**************************************************************************** + Save case statics. +****************************************************************************/ + +static BOOL saved_case_sensitive; +static BOOL saved_case_preserve; +static BOOL saved_short_case_preserve; + +/**************************************************************************** + Save case semantics. +****************************************************************************/ + +static void set_posix_case_semantics(uint32 file_attributes) +{ + if(!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) + return; + + saved_case_sensitive = case_sensitive; + saved_case_preserve = case_preserve; + saved_short_case_preserve = short_case_preserve; + + /* Set to POSIX. */ + case_sensitive = True; + case_preserve = True; + short_case_preserve = True; +} + +/**************************************************************************** + Restore case semantics. +****************************************************************************/ + +static void restore_case_semantics(uint32 file_attributes) +{ + if(!(file_attributes & FILE_FLAG_POSIX_SEMANTICS)) + return; + + case_sensitive = saved_case_sensitive; + case_preserve = saved_case_preserve; + short_case_preserve = saved_short_case_preserve; +} + +/**************************************************************************** + Utility function to map create disposition. +****************************************************************************/ + +static int map_create_disposition( uint32 create_disposition) +{ + int ret; + + switch( create_disposition ) { + case FILE_CREATE: + /* create if not exist, fail if exist */ + ret = (FILE_CREATE_IF_NOT_EXIST|FILE_EXISTS_FAIL); + break; + case FILE_SUPERSEDE: + case FILE_OVERWRITE_IF: + /* create if not exist, trunc if exist */ + ret = (FILE_CREATE_IF_NOT_EXIST|FILE_EXISTS_TRUNCATE); + break; + case FILE_OPEN: + /* fail if not exist, open if exists */ + ret = (FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_OPEN); + break; + case FILE_OPEN_IF: + /* create if not exist, open if exists */ + ret = (FILE_CREATE_IF_NOT_EXIST|FILE_EXISTS_OPEN); + break; + case FILE_OVERWRITE: + /* fail if not exist, truncate if exists */ + ret = (FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_TRUNCATE); + break; + default: + DEBUG(0,("map_create_disposition: Incorrect value for create_disposition = %d\n", + create_disposition )); + return -1; + } + + DEBUG(10,("map_create_disposition: Mapped create_disposition %lx to %x\n", + (unsigned long)create_disposition, ret )); + + return ret; +} + +/**************************************************************************** + Utility function to map share modes. +****************************************************************************/ + +static int map_share_mode( BOOL *pstat_open_only, char *fname, uint32 create_options, + uint32 desired_access, uint32 share_access, uint32 file_attributes) +{ + int smb_open_mode = -1; + + *pstat_open_only = False; + + /* + * Convert GENERIC bits to specific bits. + */ + + se_map_generic(&desired_access, &file_generic_mapping); + + switch( desired_access & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA) ) { + case FILE_READ_DATA: + smb_open_mode = DOS_OPEN_RDONLY; + break; + case FILE_WRITE_DATA: + case FILE_APPEND_DATA: + case FILE_WRITE_DATA|FILE_APPEND_DATA: + smb_open_mode = DOS_OPEN_WRONLY; + break; + case FILE_READ_DATA|FILE_WRITE_DATA: + case FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA: + case FILE_READ_DATA|FILE_APPEND_DATA: + smb_open_mode = DOS_OPEN_RDWR; + break; + } + + /* + * NB. For DELETE_ACCESS we should really check the + * directory permissions, as that is what controls + * delete, and for WRITE_DAC_ACCESS we should really + * check the ownership, as that is what controls the + * chmod. Note that this is *NOT* a security hole (this + * note is for you, Andrew) as we are not *allowing* + * the access at this point, the actual unlink or + * chown or chmod call would do this. We are just helping + * clients out by telling them if they have a hope + * of any of this succeeding. POSIX acls may still + * deny the real call. JRA. + */ + + if (smb_open_mode == -1) { + + if(desired_access == WRITE_DAC_ACCESS || desired_access == READ_CONTROL_ACCESS) + *pstat_open_only = True; + + if(desired_access & (DELETE_ACCESS|WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS| + FILE_EXECUTE|FILE_READ_ATTRIBUTES| + FILE_READ_EA|FILE_WRITE_EA|SYSTEM_SECURITY_ACCESS| + FILE_WRITE_ATTRIBUTES|READ_CONTROL_ACCESS)) { + smb_open_mode = DOS_OPEN_RDONLY; + } else if(desired_access == 0) { + + /* + * JRA - NT seems to sometimes send desired_access as zero. play it safe + * and map to a stat open. + */ + + *pstat_open_only = True; + smb_open_mode = DOS_OPEN_RDONLY; + + } else { + DEBUG(0,("map_share_mode: Incorrect value %lx for desired_access to file %s\n", + (unsigned long)desired_access, fname)); + return -1; + } + } + + /* + * Set the special bit that means allow share delete. + * This is held outside the normal share mode bits at 1<<15. + * JRA. + */ + + if(share_access & FILE_SHARE_DELETE) { + smb_open_mode |= ALLOW_SHARE_DELETE; + DEBUG(10,("map_share_mode: FILE_SHARE_DELETE requested. open_mode = %x\n", smb_open_mode)); + } + + /* + * We need to store the intent to open for Delete. This + * is what determines if a delete on close flag can be set. + * This is the wrong way (and place) to store this, but for 2.2 this + * is the only practical way. JRA. + */ + + if(desired_access & DELETE_ACCESS) { + smb_open_mode |= DELETE_ACCESS_REQUESTED; + DEBUG(10,("map_share_mode: DELETE_ACCESS requested. open_mode = %x\n", smb_open_mode)); + } + + if (create_options & FILE_DELETE_ON_CLOSE) { + /* Implicit delete access requested... */ + smb_open_mode |= DELETE_ACCESS_REQUESTED; + smb_open_mode |= DELETE_ON_CLOSE_FLAG; + DEBUG(10,("map_share_mode: FILE_DELETE_ON_CLOSE requested. open_mode = %x\n", smb_open_mode)); + } + + /* Add in the requested share mode. */ + switch( share_access & (FILE_SHARE_READ|FILE_SHARE_WRITE)) { + case FILE_SHARE_READ: + smb_open_mode |= SET_DENY_MODE(DENY_WRITE); + break; + case FILE_SHARE_WRITE: + smb_open_mode |= SET_DENY_MODE(DENY_READ); + break; + case (FILE_SHARE_READ|FILE_SHARE_WRITE): + smb_open_mode |= SET_DENY_MODE(DENY_NONE); + break; + case FILE_SHARE_NONE: + smb_open_mode |= SET_DENY_MODE(DENY_ALL); + break; + } + + /* + * Handle an O_SYNC request. + */ + + if(file_attributes & FILE_FLAG_WRITE_THROUGH) + smb_open_mode |= FILE_SYNC_OPENMODE; + + DEBUG(10,("map_share_mode: Mapped desired access %lx, share access %lx, file attributes %lx \ +to open_mode %x\n", (unsigned long)desired_access, (unsigned long)share_access, + (unsigned long)file_attributes, smb_open_mode )); + + return smb_open_mode; +} + +/**************************************************************************** + Reply to an NT create and X call on a pipe. +****************************************************************************/ +static int nt_open_pipe(char *fname, connection_struct *conn, + char *inbuf, char *outbuf, int *ppnum) +{ + pipes_struct *p = NULL; + + uint16 vuid = SVAL(inbuf, smb_uid); + int i; + + DEBUG(4,("nt_open_pipe: Opening pipe %s.\n", fname)); + + /* See if it is one we want to handle. */ + + if (lp_disable_spoolss() && strequal(fname, "\\spoolss")) + return(ERROR_DOS(ERRSRV,ERRaccess)); + + for( i = 0; known_nt_pipes[i]; i++ ) + if( strequal(fname,known_nt_pipes[i])) + break; + + if ( known_nt_pipes[i] == NULL ) + return(ERROR_DOS(ERRSRV,ERRaccess)); + + /* Strip \\ off the name. */ + fname++; + + DEBUG(3,("nt_open_pipe: Known pipe %s opening.\n", fname)); + + p = open_rpc_pipe_p(fname, conn, vuid); + if (!p) + return(ERROR_DOS(ERRSRV,ERRnofids)); + + *ppnum = p->pnum; + + return 0; +} + +/**************************************************************************** + Reply to an NT create and X call for pipes. +****************************************************************************/ + +static int do_ntcreate_pipe_open(connection_struct *conn, + char *inbuf,char *outbuf,int length,int bufsize) +{ + pstring fname; + int ret; + int pnum = -1; + char *p = NULL; + + srvstr_pull(inbuf, fname, smb_buf(inbuf), sizeof(fname), -1, STR_TERMINATE); + + if ((ret = nt_open_pipe(fname, conn, inbuf, outbuf, &pnum)) != 0) + return ret; + + /* + * Deal with pipe return. + */ + + set_message(outbuf,34,0,True); + + p = outbuf + smb_vwv2; + p++; + SSVAL(p,0,pnum); + p += 2; + SIVAL(p,0,FILE_WAS_OPENED); + p += 4; + p += 32; + SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */ + p += 20; + /* File type. */ + SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE); + /* Device state. */ + SSVAL(p,2, 0x5FF); /* ? */ + + DEBUG(5,("do_ntcreate_pipe_open: open pipe = %s\n", fname)); + + return chain_reply(inbuf,outbuf,length,bufsize); +} + +/**************************************************************************** + Reply to an NT create and X call. +****************************************************************************/ + +int reply_ntcreate_and_X(connection_struct *conn, + char *inbuf,char *outbuf,int length,int bufsize) +{ + int result; + pstring fname; + uint32 flags = IVAL(inbuf,smb_ntcreate_Flags); + uint32 desired_access = IVAL(inbuf,smb_ntcreate_DesiredAccess); + uint32 file_attributes = IVAL(inbuf,smb_ntcreate_FileAttributes); + uint32 share_access = IVAL(inbuf,smb_ntcreate_ShareAccess); + uint32 create_disposition = IVAL(inbuf,smb_ntcreate_CreateDisposition); + uint32 create_options = IVAL(inbuf,smb_ntcreate_CreateOptions); + uint16 root_dir_fid = (uint16)IVAL(inbuf,smb_ntcreate_RootDirectoryFid); + int smb_ofun; + int smb_open_mode; + int smb_attr = (file_attributes & SAMBA_ATTRIBUTES_MASK); + /* Breakout the oplock request bits so we can set the + reply bits separately. */ + int oplock_request = 0; + mode_t unixmode; + int fmode=0,rmode=0; + SMB_OFF_T file_len = 0; + SMB_STRUCT_STAT sbuf; + int smb_action = 0; + BOOL bad_path = False; + files_struct *fsp=NULL; + char *p = NULL; + BOOL stat_open_only = False; + time_t c_time; + START_PROFILE(SMBntcreateX); + + /* If it's an IPC, use the pipe handler. */ + + if (IS_IPC(conn)) { + if (lp_nt_pipe_support()) { + END_PROFILE(SMBntcreateX); + return do_ntcreate_pipe_open(conn,inbuf,outbuf,length,bufsize); + } else { + END_PROFILE(SMBntcreateX); + return(ERROR_DOS(ERRDOS,ERRbadaccess)); + } + } + + + /* + * We need to construct the open_and_X ofun value from the + * NT values, as that's what our code is structured to accept. + */ + + if((smb_ofun = map_create_disposition( create_disposition )) == -1) { + END_PROFILE(SMBntcreateX); + return(ERROR_DOS(ERRDOS,ERRbadaccess)); + } + + /* + * Get the file name. + */ + + if(root_dir_fid != 0) { + /* + * This filename is relative to a directory fid. + */ + files_struct *dir_fsp = file_fsp(inbuf,smb_ntcreate_RootDirectoryFid); + size_t dir_name_len; + + if(!dir_fsp) { + END_PROFILE(SMBntcreateX); + return(ERROR_DOS(ERRDOS,ERRbadfid)); + } + + if(!dir_fsp->is_directory) { + /* + * Check to see if this is a mac fork of some kind. + */ + + srvstr_pull(inbuf, fname, smb_buf(inbuf), sizeof(fname), -1, STR_TERMINATE); + + if( strchr_m(fname, ':')) { + END_PROFILE(SMBntcreateX); + return ERROR_NT(NT_STATUS_OBJECT_PATH_NOT_FOUND); + } + END_PROFILE(SMBntcreateX); + return(ERROR_DOS(ERRDOS,ERRbadfid)); + } + + /* + * Copy in the base directory name. + */ + + pstrcpy( fname, dir_fsp->fsp_name ); + dir_name_len = strlen(fname); + + /* + * Ensure it ends in a '\'. + */ + + if(fname[dir_name_len-1] != '\\' && fname[dir_name_len-1] != '/') { + pstrcat(fname, "\\"); + dir_name_len++; + } + + srvstr_pull(inbuf, &fname[dir_name_len], smb_buf(inbuf), sizeof(fname)-dir_name_len, + -1, STR_TERMINATE); + } else { + srvstr_pull(inbuf, fname, smb_buf(inbuf), sizeof(fname), -1, STR_TERMINATE); + } + + /* + * Now contruct the smb_open_mode value from the filename, + * desired access and the share access. + */ + RESOLVE_DFSPATH(fname, conn, inbuf, outbuf); + + if((smb_open_mode = map_share_mode(&stat_open_only, fname, create_options, desired_access, + share_access, + file_attributes)) == -1) { + END_PROFILE(SMBntcreateX); + return ERROR_DOS(ERRDOS,ERRbadaccess); + } + + oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0; + oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0; + + /* + * Ordinary file or directory. + */ + + /* + * Check if POSIX semantics are wanted. + */ + + set_posix_case_semantics(file_attributes); + + unix_convert(fname,conn,0,&bad_path,&sbuf); + + unixmode = unix_mode(conn,smb_attr | aARCH, fname); + + /* + * If it's a request for a directory open, deal with it separately. + */ + + if(create_options & FILE_DIRECTORY_FILE) { + oplock_request = 0; + + fsp = open_directory(conn, fname, &sbuf, smb_open_mode, smb_ofun, unixmode, &smb_action); + + restore_case_semantics(file_attributes); + + if(!fsp) { + if((errno == ENOENT) && bad_path) { + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRbadpath; + } + END_PROFILE(SMBntcreateX); + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + } else { + /* + * Ordinary file case. + */ + + /* NB. We have a potential bug here. If we + * cause an oplock break to ourselves, then we + * could end up processing filename related + * SMB requests whilst we await the oplock + * break response. As we may have changed the + * filename case semantics to be POSIX-like, + * this could mean a filename request could + * fail when it should succeed. This is a rare + * condition, but eventually we must arrange + * to restore the correct case semantics + * before issuing an oplock break request to + * our client. JRA. */ + + fsp = open_file_shared(conn,fname,&sbuf,smb_open_mode, + smb_ofun,unixmode, oplock_request,&rmode,&smb_action); + + if (!fsp) { + /* We cheat here. There are two cases we + * care about. One is a directory rename, + * where the NT client will attempt to + * open the source directory for + * DELETE access. Note that when the + * NT client does this it does *not* + * set the directory bit in the + * request packet. This is translated + * into a read/write open + * request. POSIX states that any open + * for write request on a directory + * will generate an EISDIR error, so + * we can catch this here and open a + * pseudo handle that is flagged as a + * directory. The second is an open + * for a permissions read only, which + * we handle in the open_file_stat case. JRA. + */ + + if(errno == EISDIR) { + + /* + * Fail the open if it was explicitly a non-directory file. + */ + + if (create_options & FILE_NON_DIRECTORY_FILE) { + restore_case_semantics(file_attributes); + SSVAL(outbuf, smb_flg2, + SVAL(outbuf,smb_flg2) | FLAGS2_32_BIT_ERROR_CODES); + END_PROFILE(SMBntcreateX); + return ERROR_NT(NT_STATUS_FILE_IS_A_DIRECTORY); + } + + oplock_request = 0; + fsp = open_directory(conn, fname, &sbuf, smb_open_mode, smb_ofun, unixmode, &smb_action); + + if(!fsp) { + restore_case_semantics(file_attributes); + if((errno == ENOENT) && bad_path) { + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRbadpath; + } + END_PROFILE(SMBntcreateX); + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } +#ifdef EROFS + } else if (((errno == EACCES) || (errno == EROFS)) && stat_open_only) { +#else /* !EROFS */ + } else if (errno == EACCES && stat_open_only) { +#endif + /* + * We couldn't open normally and all we want + * are the permissions. Try and do a stat open. + */ + + oplock_request = 0; + + fsp = open_file_stat(conn,fname,&sbuf,smb_open_mode,&smb_action); + + if(!fsp) { + restore_case_semantics(file_attributes); + END_PROFILE(SMBntcreateX); + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + + } else { + + if((errno == ENOENT) && bad_path) { + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRbadpath; + } + + restore_case_semantics(file_attributes); + + END_PROFILE(SMBntcreateX); + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + } + } + + restore_case_semantics(file_attributes); + + file_len = sbuf.st_size; + fmode = dos_mode(conn,fname,&sbuf); + if(fmode == 0) + fmode = FILE_ATTRIBUTE_NORMAL; + if (!fsp->is_directory && (fmode & aDIR)) { + close_file(fsp,False); + END_PROFILE(SMBntcreateX); + return ERROR_DOS(ERRDOS,ERRnoaccess); + } + + /* + * If the caller set the extended oplock request bit + * and we granted one (by whatever means) - set the + * correct bit for extended oplock reply. + */ + + if (oplock_request && lp_fake_oplocks(SNUM(conn))) + smb_action |= EXTENDED_OPLOCK_GRANTED; + + if(oplock_request && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) + smb_action |= EXTENDED_OPLOCK_GRANTED; + +#if 1 /* JRATEST */ + /* W2K sends back 42 words here ! */ + set_message(outbuf,42,0,True); +#else + set_message(outbuf,34,0,True); +#endif + + p = outbuf + smb_vwv2; + + /* + * Currently as we don't support level II oplocks we just report + * exclusive & batch here. + */ + + if (smb_action & EXTENDED_OPLOCK_GRANTED) + SCVAL(p,0, BATCH_OPLOCK_RETURN); + else if (LEVEL_II_OPLOCK_TYPE(fsp->oplock_type)) + SCVAL(p,0, LEVEL_II_OPLOCK_RETURN); + else + SCVAL(p,0,NO_OPLOCK_RETURN); + + p++; + SSVAL(p,0,fsp->fnum); + p += 2; + SIVAL(p,0,smb_action); + p += 4; + + /* Create time. */ + c_time = get_create_time(&sbuf,lp_fake_dir_create_times(SNUM(conn))); + + if (lp_dos_filetime_resolution(SNUM(conn))) { + c_time &= ~1; + sbuf.st_atime &= ~1; + sbuf.st_mtime &= ~1; + sbuf.st_mtime &= ~1; + } + + put_long_date(p,c_time); + p += 8; + put_long_date(p,sbuf.st_atime); /* access time */ + p += 8; + put_long_date(p,sbuf.st_mtime); /* write time */ + p += 8; + put_long_date(p,sbuf.st_mtime); /* change time */ + p += 8; + SIVAL(p,0,fmode); /* File Attributes. */ + p += 4; + SOFF_T(p, 0, file_len); + p += 8; + SOFF_T(p,0,file_len); + p += 12; + SCVAL(p,0,fsp->is_directory ? 1 : 0); + + DEBUG(5,("reply_ntcreate_and_X: fnum = %d, open name = %s\n", fsp->fnum, fsp->fsp_name)); + + result = chain_reply(inbuf,outbuf,length,bufsize); + END_PROFILE(SMBntcreateX); + return result; +} + +/**************************************************************************** + Reply to a NT_TRANSACT_CREATE call to open a pipe. +****************************************************************************/ + +static int do_nt_transact_create_pipe( connection_struct *conn, + char *inbuf, char *outbuf, int length, + int bufsize, char **ppsetup, char **ppparams, + char **ppdata) +{ + pstring fname; + int total_parameter_count = (int)IVAL(inbuf, smb_nt_TotalParameterCount); + char *params = *ppparams; + int ret; + int pnum = -1; + char *p = NULL; + + /* + * Ensure minimum number of parameters sent. + */ + + if(total_parameter_count < 54) { + DEBUG(0,("do_nt_transact_create_pipe - insufficient parameters (%u)\n", (unsigned int)total_parameter_count)); + return ERROR_DOS(ERRDOS,ERRbadaccess); + } + + srvstr_pull(inbuf, fname, params+53, sizeof(fname), -1, STR_TERMINATE); + + if ((ret = nt_open_pipe(fname, conn, inbuf, outbuf, &pnum)) != 0) + return ret; + + /* Realloc the size of parameters and data we will return */ + params = Realloc(*ppparams, 69); + if(params == NULL) + return ERROR_DOS(ERRDOS,ERRnomem); + + *ppparams = params; + + memset((char *)params,'\0',69); + + p = params; + SCVAL(p,0,NO_OPLOCK_RETURN); + + p += 2; + SSVAL(p,0,pnum); + p += 2; + SIVAL(p,0,FILE_WAS_OPENED); + p += 8; + + p += 32; + SIVAL(p,0,FILE_ATTRIBUTE_NORMAL); /* File Attributes. */ + p += 20; + /* File type. */ + SSVAL(p,0,FILE_TYPE_MESSAGE_MODE_PIPE); + /* Device state. */ + SSVAL(p,2, 0x5FF); /* ? */ + + DEBUG(5,("do_nt_transact_create_pipe: open name = %s\n", fname)); + + /* Send the required number of replies */ + send_nt_replies(inbuf, outbuf, bufsize, NT_STATUS_OK, params, 69, *ppdata, 0); + + return -1; +} + +/**************************************************************************** + Internal fn to set security descriptors. +****************************************************************************/ + +static BOOL set_sd(files_struct *fsp, char *data, uint32 sd_len, uint32 security_info_sent, int *pdef_class,uint32 *pdef_code) +{ + prs_struct pd; + SEC_DESC *psd = NULL; + TALLOC_CTX *mem_ctx; + BOOL ret; + + if (sd_len == 0) { + *pdef_class = ERRDOS; + *pdef_code = ERRbadaccess; + return False; + } + + /* + * Init the parse struct we will unmarshall from. + */ + + if ((mem_ctx = talloc_init()) == NULL) { + DEBUG(0,("set_sd: talloc_init failed.\n")); + *pdef_class = ERRDOS; + *pdef_code = ERRnomem; + return False; + } + + prs_init(&pd, 0, mem_ctx, UNMARSHALL); + + /* + * Setup the prs_struct to point at the memory we just + * allocated. + */ + + prs_give_memory( &pd, data, sd_len, False); + + /* + * Finally, unmarshall from the data buffer. + */ + + if(!sec_io_desc( "sd data", &psd, &pd, 1)) { + DEBUG(0,("set_sd: Error in unmarshalling security descriptor.\n")); + /* + * Return access denied for want of a better error message.. + */ + talloc_destroy(mem_ctx); + *pdef_class = ERRDOS; + *pdef_code = ERRnomem; + return False; + } + + if (psd->off_owner_sid==0) + security_info_sent &= ~OWNER_SECURITY_INFORMATION; + if (psd->off_grp_sid==0) + security_info_sent &= ~GROUP_SECURITY_INFORMATION; + if (psd->off_sacl==0) + security_info_sent &= ~SACL_SECURITY_INFORMATION; + if (psd->off_dacl==0) + security_info_sent &= ~DACL_SECURITY_INFORMATION; + + ret = fsp->conn->vfs_ops.fset_nt_acl( fsp, fsp->fd, security_info_sent, psd); + + if (!ret) { + talloc_destroy(mem_ctx); + *pdef_class = ERRDOS; + *pdef_code = ERRnoaccess; + return False; + } + + talloc_destroy(mem_ctx); + + *pdef_class = 0; + *pdef_code = 0; + return True; +} + +/**************************************************************************** + Reply to a NT_TRANSACT_CREATE call (needs to process SD's). +****************************************************************************/ + +static int call_nt_transact_create(connection_struct *conn, + char *inbuf, char *outbuf, int length, + int bufsize, char **ppsetup, char **ppparams, + char **ppdata) +{ + pstring fname; + char *params = *ppparams; + char *data = *ppdata; + int total_parameter_count = (int)IVAL(inbuf, smb_nt_TotalParameterCount); + /* Breakout the oplock request bits so we can set the + reply bits separately. */ + int oplock_request = 0; + mode_t unixmode; + int fmode=0,rmode=0; + SMB_OFF_T file_len = 0; + SMB_STRUCT_STAT sbuf; + int smb_action = 0; + BOOL bad_path = False; + files_struct *fsp = NULL; + char *p = NULL; + BOOL stat_open_only = False; + uint32 flags; + uint32 desired_access; + uint32 file_attributes; + uint32 share_access; + uint32 create_disposition; + uint32 create_options; + uint32 sd_len; + uint16 root_dir_fid; + int smb_ofun; + int smb_open_mode; + int smb_attr; + int error_class; + uint32 error_code; + time_t c_time; + + DEBUG(5,("call_nt_transact_create\n")); + + /* + * If it's an IPC, use the pipe handler. + */ + + if (IS_IPC(conn)) { + if (lp_nt_pipe_support()) + return do_nt_transact_create_pipe(conn, inbuf, outbuf, length, + bufsize, ppsetup, ppparams, ppdata); + else + return ERROR_DOS(ERRDOS,ERRbadaccess); + } + + /* + * Ensure minimum number of parameters sent. + */ + + if(total_parameter_count < 54) { + DEBUG(0,("call_nt_transact_create - insufficient parameters (%u)\n", (unsigned int)total_parameter_count)); + return ERROR_DOS(ERRDOS,ERRbadaccess); + } + + flags = IVAL(params,0); + desired_access = IVAL(params,8); + file_attributes = IVAL(params,20); + share_access = IVAL(params,24); + create_disposition = IVAL(params,28); + create_options = IVAL(params,32); + sd_len = IVAL(params,36); + root_dir_fid = (uint16)IVAL(params,4); + smb_attr = (file_attributes & SAMBA_ATTRIBUTES_MASK); + + /* + * We need to construct the open_and_X ofun value from the + * NT values, as that's what our code is structured to accept. + */ + + if((smb_ofun = map_create_disposition( create_disposition )) == -1) + return ERROR_DOS(ERRDOS,ERRbadmem); + + /* + * Get the file name. + */ + + if(root_dir_fid != 0) { + /* + * This filename is relative to a directory fid. + */ + + files_struct *dir_fsp = file_fsp(params,4); + size_t dir_name_len; + + if(!dir_fsp) + return ERROR_DOS(ERRDOS,ERRbadfid); + + if(!dir_fsp->is_directory) { + /* + * Check to see if this is a mac fork of some kind. + */ + + srvstr_pull(inbuf, fname, params+53, sizeof(fname), -1, STR_TERMINATE); + + if( strchr_m(fname, ':')) { + return ERROR_NT(NT_STATUS_OBJECT_PATH_NOT_FOUND); + } + + return ERROR_DOS(ERRDOS,ERRbadfid); + } + + /* + * Copy in the base directory name. + */ + + pstrcpy( fname, dir_fsp->fsp_name ); + dir_name_len = strlen(fname); + + /* + * Ensure it ends in a '\'. + */ + + if((fname[dir_name_len-1] != '\\') && (fname[dir_name_len-1] != '/')) { + pstrcat(fname, "\\"); + dir_name_len++; + } + + srvstr_pull(inbuf, &fname[dir_name_len], params+53, sizeof(fname)-dir_name_len, + -1, STR_TERMINATE); + } else { + srvstr_pull(inbuf, fname, params+53, sizeof(fname), -1, STR_TERMINATE); + } + + /* + * Now contruct the smb_open_mode value from the desired access + * and the share access. + */ + + if((smb_open_mode = map_share_mode( &stat_open_only, fname, create_options, desired_access, + share_access, file_attributes)) == -1) + return ERROR_DOS(ERRDOS,ERRbadaccess); + + oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0; + oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0; + + /* + * Check if POSIX semantics are wanted. + */ + + set_posix_case_semantics(file_attributes); + + RESOLVE_DFSPATH(fname, conn, inbuf, outbuf); + + unix_convert(fname,conn,0,&bad_path,&sbuf); + + unixmode = unix_mode(conn,smb_attr | aARCH, fname); + + /* + * If it's a request for a directory open, deal with it separately. + */ + + if(create_options & FILE_DIRECTORY_FILE) { + + oplock_request = 0; + + /* + * We will get a create directory here if the Win32 + * app specified a security descriptor in the + * CreateDirectory() call. + */ + + fsp = open_directory(conn, fname, &sbuf, smb_open_mode, smb_ofun, unixmode, &smb_action); + + if(!fsp) { + restore_case_semantics(file_attributes); + if((errno == ENOENT) && bad_path) { + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRbadpath; + } + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + + } else { + + /* + * Ordinary file case. + */ + + fsp = open_file_shared(conn,fname,&sbuf,smb_open_mode,smb_ofun,unixmode, + oplock_request,&rmode,&smb_action); + + if (!fsp) { + + if(errno == EISDIR) { + + /* + * Fail the open if it was explicitly a non-directory file. + */ + + if (create_options & FILE_NON_DIRECTORY_FILE) { + restore_case_semantics(file_attributes); + SSVAL(outbuf, smb_flg2, + SVAL(outbuf,smb_flg2) | FLAGS2_32_BIT_ERROR_CODES); + return ERROR_NT(NT_STATUS_FILE_IS_A_DIRECTORY); + } + + oplock_request = 0; + fsp = open_directory(conn, fname, &sbuf, smb_open_mode, smb_ofun, unixmode, &smb_action); + + if(!fsp) { + restore_case_semantics(file_attributes); + if((errno == ENOENT) && bad_path) { + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRbadpath; + } + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } +#ifdef EROFS + } else if (((errno == EACCES) || (errno == EROFS)) && stat_open_only) { +#else /* !EROFS */ + } else if (errno == EACCES && stat_open_only) { +#endif + + /* + * We couldn't open normally and all we want + * are the permissions. Try and do a stat open. + */ + + oplock_request = 0; + + fsp = open_file_stat(conn,fname,&sbuf,smb_open_mode,&smb_action); + + if(!fsp) { + restore_case_semantics(file_attributes); + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + } else { + + if((errno == ENOENT) && bad_path) { + unix_ERR_class = ERRDOS; + unix_ERR_code = ERRbadpath; + } + + restore_case_semantics(file_attributes); + + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + } + + file_len = sbuf.st_size; + fmode = dos_mode(conn,fname,&sbuf); + if(fmode == 0) + fmode = FILE_ATTRIBUTE_NORMAL; + + if (fmode & aDIR) { + close_file(fsp,False); + restore_case_semantics(file_attributes); + return ERROR_DOS(ERRDOS,ERRnoaccess); + } + + /* + * If the caller set the extended oplock request bit + * and we granted one (by whatever means) - set the + * correct bit for extended oplock reply. + */ + + if (oplock_request && lp_fake_oplocks(SNUM(conn))) + smb_action |= EXTENDED_OPLOCK_GRANTED; + + if(oplock_request && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) + smb_action |= EXTENDED_OPLOCK_GRANTED; + } + + /* + * Now try and apply the desired SD. + */ + + if (!set_sd( fsp, data, sd_len, ALL_SECURITY_INFORMATION, &error_class, &error_code)) { + close_file(fsp,False); + restore_case_semantics(file_attributes); + return ERROR_DOS(error_class, error_code); + } + + restore_case_semantics(file_attributes); + + /* Realloc the size of parameters and data we will return */ + params = Realloc(*ppparams, 69); + if(params == NULL) + return ERROR_DOS(ERRDOS,ERRnomem); + + *ppparams = params; + + memset((char *)params,'\0',69); + + p = params; + if (smb_action & EXTENDED_OPLOCK_GRANTED) + SCVAL(p,0, BATCH_OPLOCK_RETURN); + else if (LEVEL_II_OPLOCK_TYPE(fsp->oplock_type)) + SCVAL(p,0, LEVEL_II_OPLOCK_RETURN); + else + SCVAL(p,0,NO_OPLOCK_RETURN); + + p += 2; + SSVAL(p,0,fsp->fnum); + p += 2; + SIVAL(p,0,smb_action); + p += 8; + + /* Create time. */ + c_time = get_create_time(&sbuf,lp_fake_dir_create_times(SNUM(conn))); + + if (lp_dos_filetime_resolution(SNUM(conn))) { + c_time &= ~1; + sbuf.st_atime &= ~1; + sbuf.st_mtime &= ~1; + sbuf.st_mtime &= ~1; + } + + put_long_date(p,c_time); + p += 8; + put_long_date(p,sbuf.st_atime); /* access time */ + p += 8; + put_long_date(p,sbuf.st_mtime); /* write time */ + p += 8; + put_long_date(p,sbuf.st_mtime); /* change time */ + p += 8; + SIVAL(p,0,fmode); /* File Attributes. */ + p += 4; + SOFF_T(p,0,file_len); + p += 8; + SOFF_T(p,0,file_len); + + DEBUG(5,("call_nt_transact_create: open name = %s\n", fname)); + + /* Send the required number of replies */ + send_nt_replies(inbuf, outbuf, bufsize, NT_STATUS_OK, params, 69, *ppdata, 0); + + return -1; +} + +/**************************************************************************** + Reply to a NT CANCEL request. +****************************************************************************/ +int reply_ntcancel(connection_struct *conn, + char *inbuf,char *outbuf,int length,int bufsize) +{ + /* + * Go through and cancel any pending change notifies. + */ + + int mid = SVAL(inbuf,smb_mid); + START_PROFILE(SMBntcancel); + remove_pending_change_notify_requests_by_mid(mid); + remove_pending_lock_requests_by_mid(mid); + + DEBUG(3,("reply_ntcancel: cancel called on mid = %d.\n", mid)); + + END_PROFILE(SMBntcancel); + return(-1); +} + +/**************************************************************************** + Reply to an unsolicited SMBNTtranss - just ignore it! +****************************************************************************/ +int reply_nttranss(connection_struct *conn, + char *inbuf,char *outbuf,int length,int bufsize) +{ + START_PROFILE(SMBnttranss); + DEBUG(4,("Ignoring nttranss of length %d\n",length)); + END_PROFILE(SMBnttranss); + return(-1); +} + +/**************************************************************************** + Reply to a notify change - queue the request and + don't allow a directory to be opened. +****************************************************************************/ +static int call_nt_transact_notify_change(connection_struct *conn, + char *inbuf, char *outbuf, int length, + int bufsize, + char **ppsetup, + char **ppparams, char **ppdata) +{ + char *setup = *ppsetup; + files_struct *fsp; + uint32 flags; + + fsp = file_fsp(setup,4); + flags = IVAL(setup, 0); + + DEBUG(3,("call_nt_transact_notify_change\n")); + + if(!fsp) + return ERROR_DOS(ERRDOS,ERRbadfid); + + if((!fsp->is_directory) || (conn != fsp->conn)) + return ERROR_DOS(ERRDOS,ERRbadfid); + + if (!change_notify_set(inbuf, fsp, conn, flags)) { + return(UNIXERROR(ERRDOS,ERRbadfid)); + } + + DEBUG(3,("call_nt_transact_notify_change: notify change called on directory \ +name = %s\n", fsp->fsp_name )); + + return -1; +} + +/**************************************************************************** + Reply to an NT transact rename command. +****************************************************************************/ + +static int call_nt_transact_rename(connection_struct *conn, + char *inbuf, char *outbuf, int length, + int bufsize, + char **ppsetup, char **ppparams, char **ppdata) +{ + char *params = *ppparams; + pstring new_name; + files_struct *fsp = file_fsp(params, 0); + BOOL replace_if_exists = (SVAL(params,2) & RENAME_REPLACE_IF_EXISTS) ? True : False; + NTSTATUS status; + + CHECK_FSP(fsp, conn); + srvstr_pull(inbuf, new_name, params+4, sizeof(new_name), -1, STR_TERMINATE); + + status = rename_internals(conn, fsp->fsp_name, + new_name, replace_if_exists); + if (!NT_STATUS_IS_OK(status)) return ERROR_NT(status); + + /* + * Rename was successful. + */ + send_nt_replies(inbuf, outbuf, bufsize, NT_STATUS_OK, NULL, 0, NULL, 0); + + DEBUG(3,("nt transact rename from = %s, to = %s succeeded.\n", + fsp->fsp_name, new_name)); + + /* + * Win2k needs a changenotify request response before it will + * update after a rename.. + */ + + process_pending_change_notify_queue((time_t)0); + + return -1; +} + +/****************************************************************************** + Fake up a completely empty SD. +*******************************************************************************/ + +static size_t get_null_nt_acl(TALLOC_CTX *mem_ctx, SEC_DESC **ppsd) +{ + extern DOM_SID global_sid_World; + size_t sd_size; + + *ppsd = make_standard_sec_desc( mem_ctx, &global_sid_World, &global_sid_World, NULL, &sd_size); + if(!*ppsd) { + DEBUG(0,("get_null_nt_acl: Unable to malloc space for security descriptor.\n")); + sd_size = 0; + } + + return sd_size; +} + +/**************************************************************************** + Reply to query a security descriptor - currently this is not implemented (it + is planned to be though). Right now it just returns the same thing NT would + when queried on a FAT filesystem. JRA. +****************************************************************************/ + +static int call_nt_transact_query_security_desc(connection_struct *conn, + char *inbuf, char *outbuf, + int length, int bufsize, + char **ppsetup, char **ppparams, char **ppdata) +{ + uint32 max_data_count = IVAL(inbuf,smb_nt_MaxDataCount); + char *params = *ppparams; + char *data = *ppdata; + prs_struct pd; + SEC_DESC *psd = NULL; + size_t sd_size; + TALLOC_CTX *mem_ctx; + + files_struct *fsp = file_fsp(params,0); + + if(!fsp) + return ERROR_DOS(ERRDOS,ERRbadfid); + + DEBUG(3,("call_nt_transact_query_security_desc: file = %s\n", fsp->fsp_name )); + + params = Realloc(*ppparams, 4); + if(params == NULL) + return ERROR_DOS(ERRDOS,ERRnomem); + + *ppparams = params; + + if ((mem_ctx = talloc_init()) == NULL) { + DEBUG(0,("call_nt_transact_query_security_desc: talloc_init failed.\n")); + return ERROR_DOS(ERRDOS,ERRnomem); + } + + /* + * Get the permissions to return. + */ + + if (!lp_nt_acl_support(SNUM(conn))) + sd_size = get_null_nt_acl(mem_ctx, &psd); + else + sd_size = conn->vfs_ops.fget_nt_acl(fsp, fsp->fd, &psd); + + if (sd_size == 0) { + talloc_destroy(mem_ctx); + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + + DEBUG(3,("call_nt_transact_query_security_desc: sd_size = %d.\n",(int)sd_size)); + + SIVAL(params,0,(uint32)sd_size); + + if(max_data_count < sd_size) { + + send_nt_replies(inbuf, outbuf, bufsize, NT_STATUS_BUFFER_TOO_SMALL, + params, 4, *ppdata, 0); + talloc_destroy(mem_ctx); + return -1; + } + + /* + * Allocate the data we will point this at. + */ + + data = Realloc(*ppdata, sd_size); + if(data == NULL) { + talloc_destroy(mem_ctx); + return ERROR_DOS(ERRDOS,ERRnomem); + } + + *ppdata = data; + + memset(data, '\0', sd_size); + + /* + * Init the parse struct we will marshall into. + */ + + prs_init(&pd, 0, mem_ctx, MARSHALL); + + /* + * Setup the prs_struct to point at the memory we just + * allocated. + */ + + prs_give_memory( &pd, data, (uint32)sd_size, False); + + /* + * Finally, linearize into the outgoing buffer. + */ + + if(!sec_io_desc( "sd data", &psd, &pd, 1)) { + DEBUG(0,("call_nt_transact_query_security_desc: Error in marshalling \ +security descriptor.\n")); + /* + * Return access denied for want of a better error message.. + */ + talloc_destroy(mem_ctx); + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + + /* + * Now we can delete the security descriptor. + */ + + talloc_destroy(mem_ctx); + + send_nt_replies(inbuf, outbuf, bufsize, NT_STATUS_OK, params, 4, data, (int)sd_size); + return -1; +} + +/**************************************************************************** + Reply to set a security descriptor. Map to UNIX perms. +****************************************************************************/ + +static int call_nt_transact_set_security_desc(connection_struct *conn, + char *inbuf, char *outbuf, int length, + int bufsize, char **ppsetup, + char **ppparams, char **ppdata) +{ + uint32 total_parameter_count = IVAL(inbuf, smb_nts_TotalParameterCount); + char *params= *ppparams; + char *data = *ppdata; + uint32 total_data_count = (uint32)IVAL(inbuf, smb_nts_TotalDataCount); + files_struct *fsp = NULL; + uint32 security_info_sent = 0; + int error_class; + uint32 error_code; + + if(total_parameter_count < 8) + return ERROR_DOS(ERRDOS,ERRbadfunc); + + if((fsp = file_fsp(params,0)) == NULL) + return ERROR_DOS(ERRDOS,ERRbadfid); + + if(!lp_nt_acl_support(SNUM(conn))) + goto done; + + security_info_sent = IVAL(params,4); + + DEBUG(3,("call_nt_transact_set_security_desc: file = %s, sent 0x%x\n", fsp->fsp_name, + (unsigned int)security_info_sent )); + + if (!set_sd( fsp, data, total_data_count, security_info_sent, &error_class, &error_code)) + return ERROR_DOS(error_class, error_code); + + done: + + send_nt_replies(inbuf, outbuf, bufsize, NT_STATUS_OK, NULL, 0, NULL, 0); + return -1; +} + +/**************************************************************************** + Reply to IOCTL - not implemented - no plans. +****************************************************************************/ +static int call_nt_transact_ioctl(connection_struct *conn, + char *inbuf, char *outbuf, int length, + int bufsize, + char **ppsetup, char **ppparams, char **ppdata) +{ + static BOOL logged_message = False; + + if(!logged_message) { + DEBUG(0,("call_nt_transact_ioctl: Currently not implemented.\n")); + logged_message = True; /* Only print this once... */ + } + return ERROR_DOS(ERRSRV,ERRnosupport); +} + +/**************************************************************************** + Reply to a SMBNTtrans. +****************************************************************************/ +int reply_nttrans(connection_struct *conn, + char *inbuf,char *outbuf,int length,int bufsize) +{ + int outsize = 0; +#if 0 /* Not used. */ + uint16 max_setup_count = CVAL(inbuf, smb_nt_MaxSetupCount); + uint32 max_parameter_count = IVAL(inbuf, smb_nt_MaxParameterCount); + uint32 max_data_count = IVAL(inbuf,smb_nt_MaxDataCount); +#endif /* Not used. */ + uint32 total_parameter_count = IVAL(inbuf, smb_nt_TotalParameterCount); + uint32 total_data_count = IVAL(inbuf, smb_nt_TotalDataCount); + uint32 parameter_count = IVAL(inbuf,smb_nt_ParameterCount); + uint32 parameter_offset = IVAL(inbuf,smb_nt_ParameterOffset); + uint32 data_count = IVAL(inbuf,smb_nt_DataCount); + uint32 data_offset = IVAL(inbuf,smb_nt_DataOffset); + uint16 setup_count = 2*CVAL(inbuf,smb_nt_SetupCount); /* setup count is in *words* */ + uint16 function_code = SVAL( inbuf, smb_nt_Function); + char *params = NULL, *data = NULL, *setup = NULL; + uint32 num_params_sofar, num_data_sofar; + START_PROFILE(SMBnttrans); + + if(global_oplock_break && (function_code == NT_TRANSACT_CREATE)) { + /* + * Queue this open message as we are the process of an oplock break. + */ + + DEBUG(2,("reply_nttrans: queueing message NT_TRANSACT_CREATE \ +due to being in oplock break state.\n" )); + + push_oplock_pending_smb_message( inbuf, length); + END_PROFILE(SMBnttrans); + return -1; + } + + if (IS_IPC(conn) && (function_code != NT_TRANSACT_CREATE)) { + END_PROFILE(SMBnttrans); + return ERROR_DOS(ERRSRV,ERRaccess); + } + + outsize = set_message(outbuf,0,0,True); + + /* + * All nttrans messages we handle have smb_wct == 19 + setup_count. + * Ensure this is so as a sanity check. + */ + + if(CVAL(inbuf, smb_wct) != 19 + (setup_count/2)) { + DEBUG(2,("Invalid smb_wct %d in nttrans call (should be %d)\n", + CVAL(inbuf, smb_wct), 19 + (setup_count/2))); + END_PROFILE(SMBnttrans); + return ERROR_DOS(ERRSRV,ERRerror); + } + + /* Allocate the space for the setup, the maximum needed parameters and data */ + + if(setup_count > 0) + setup = (char *)malloc(setup_count); + if (total_parameter_count > 0) + params = (char *)malloc(total_parameter_count); + if (total_data_count > 0) + data = (char *)malloc(total_data_count); + + if ((total_parameter_count && !params) || (total_data_count && !data) || + (setup_count && !setup)) { + SAFE_FREE(setup); + SAFE_FREE(params); + SAFE_FREE(data); + DEBUG(0,("reply_nttrans : Out of memory\n")); + END_PROFILE(SMBnttrans); + return ERROR_DOS(ERRDOS,ERRnomem); + } + + /* Copy the param and data bytes sent with this request into + the params buffer */ + num_params_sofar = parameter_count; + num_data_sofar = data_count; + + if (parameter_count > total_parameter_count || data_count > total_data_count) + exit_server("reply_nttrans: invalid sizes in packet."); + + if(setup) { + memcpy( setup, &inbuf[smb_nt_SetupStart], setup_count); + DEBUG(10,("reply_nttrans: setup_count = %d\n", setup_count)); + dump_data(10, setup, setup_count); + } + if(params) { + memcpy( params, smb_base(inbuf) + parameter_offset, parameter_count); + DEBUG(10,("reply_nttrans: parameter_count = %d\n", parameter_count)); + dump_data(10, params, parameter_count); + } + if(data) { + memcpy( data, smb_base(inbuf) + data_offset, data_count); + DEBUG(10,("reply_nttrans: data_count = %d\n",data_count)); + dump_data(10, data, data_count); + } + + if(num_data_sofar < total_data_count || num_params_sofar < total_parameter_count) { + /* We need to send an interim response then receive the rest + of the parameter/data bytes */ + outsize = set_message(outbuf,0,0,True); + if (!send_smb(smbd_server_fd(),outbuf)) + exit_server("reply_nttrans: send_smb failed."); + + while( num_data_sofar < total_data_count || num_params_sofar < total_parameter_count) { + BOOL ret; + + ret = receive_next_smb(inbuf,bufsize,SMB_SECONDARY_WAIT); + + if((ret && (CVAL(inbuf, smb_com) != SMBnttranss)) || !ret) { + outsize = set_message(outbuf,0,0,True); + if(ret) { + DEBUG(0,("reply_nttrans: Invalid secondary nttrans packet\n")); + } else { + DEBUG(0,("reply_nttrans: %s in getting secondary nttrans response.\n", + (smb_read_error == READ_ERROR) ? "error" : "timeout" )); + } + SAFE_FREE(params); + SAFE_FREE(data); + SAFE_FREE(setup); + END_PROFILE(SMBnttrans); + return ERROR_DOS(ERRSRV,ERRerror); + } + + /* Revise total_params and total_data in case they have changed downwards */ + total_parameter_count = IVAL(inbuf, smb_nts_TotalParameterCount); + total_data_count = IVAL(inbuf, smb_nts_TotalDataCount); + num_params_sofar += (parameter_count = IVAL(inbuf,smb_nts_ParameterCount)); + num_data_sofar += ( data_count = IVAL(inbuf, smb_nts_DataCount)); + if (num_params_sofar > total_parameter_count || num_data_sofar > total_data_count) + exit_server("reply_nttrans2: data overflow in secondary nttrans packet"); + + memcpy( ¶ms[ IVAL(inbuf, smb_nts_ParameterDisplacement)], + smb_base(inbuf) + IVAL(inbuf, smb_nts_ParameterOffset), parameter_count); + memcpy( &data[IVAL(inbuf, smb_nts_DataDisplacement)], + smb_base(inbuf)+ IVAL(inbuf, smb_nts_DataOffset), data_count); + } + } + + if (Protocol >= PROTOCOL_NT1) { + SSVAL(outbuf,smb_flg2,SVAL(outbuf,smb_flg2) | 0x40); /* IS_LONG_NAME */ + } + + /* Now we must call the relevant NT_TRANS function */ + switch(function_code) { + case NT_TRANSACT_CREATE: + START_PROFILE_NESTED(NT_transact_create); + outsize = call_nt_transact_create(conn, inbuf, outbuf, length, bufsize, + &setup, ¶ms, &data); + END_PROFILE_NESTED(NT_transact_create); + break; + case NT_TRANSACT_IOCTL: + START_PROFILE_NESTED(NT_transact_ioctl); + outsize = call_nt_transact_ioctl(conn, + inbuf, outbuf, length, bufsize, + &setup, ¶ms, &data); + END_PROFILE_NESTED(NT_transact_ioctl); + break; + case NT_TRANSACT_SET_SECURITY_DESC: + START_PROFILE_NESTED(NT_transact_set_security_desc); + outsize = call_nt_transact_set_security_desc(conn, inbuf, outbuf, + length, bufsize, + &setup, ¶ms, &data); + END_PROFILE_NESTED(NT_transact_set_security_desc); + break; + case NT_TRANSACT_NOTIFY_CHANGE: + START_PROFILE_NESTED(NT_transact_notify_change); + outsize = call_nt_transact_notify_change(conn, inbuf, outbuf, + length, bufsize, + &setup, ¶ms, &data); + END_PROFILE_NESTED(NT_transact_notify_change); + break; + case NT_TRANSACT_RENAME: + START_PROFILE_NESTED(NT_transact_rename); + outsize = call_nt_transact_rename(conn, inbuf, outbuf, length, + bufsize, + &setup, ¶ms, &data); + END_PROFILE_NESTED(NT_transact_rename); + break; + + case NT_TRANSACT_QUERY_SECURITY_DESC: + START_PROFILE_NESTED(NT_transact_query_security_desc); + outsize = call_nt_transact_query_security_desc(conn, inbuf, outbuf, + length, bufsize, + &setup, ¶ms, &data); + END_PROFILE_NESTED(NT_transact_query_security_desc); + break; + default: + /* Error in request */ + DEBUG(0,("reply_nttrans: Unknown request %d in nttrans call\n", function_code)); + SAFE_FREE(setup); + SAFE_FREE(params); + SAFE_FREE(data); + END_PROFILE(SMBnttrans); + return ERROR_DOS(ERRSRV,ERRerror); + } + + /* As we do not know how many data packets will need to be + returned here the various call_nt_transact_xxxx calls + must send their own. Thus a call_nt_transact_xxxx routine only + returns a value other than -1 when it wants to send + an error packet. + */ + + SAFE_FREE(setup); + SAFE_FREE(params); + SAFE_FREE(data); + END_PROFILE(SMBnttrans); + return outsize; /* If a correct response was needed the call_nt_transact_xxxx + calls have already sent it. If outsize != -1 then it is + returning an error packet. */ +} |